Pulley



Aug. 26, 1941. R. 'rRAvls Erm. 2,253,591

PULLEY Filed Feb. 2'?. 1939 2 sheets-sheet 1 l Patented ug. 26, 1941 s PATENT] oF-FICE y PULLEY Ralph L.v Travis and Brooks A. Otte, Sidney, Iowa,

Yas'signo'rs to Monteith Bros.

a corporation of Indiana Inc., Elkhart, Ind.,

. 7 Application February 27, 1939, serial No. 258,685

2 Claims.

This invention relates to improvements in lighting units for farm tractors and the like.

Y Heretofore farm tractors have not been equipped with lights thereby necessitating the discontinuance of their use `after darkness has set in; therefore, the main objects of this invention are to provide a lighting unit for a farm tractor; to provide a lighting unit which may be adapted to substantially all farm tractors now in use regardless of theirV` make; to .provide on a farm tractor suitable bracketsand pulleys for supporting adjustably and operating a generator to energize a lamp; to provide new and improved drive pulleys for connection toa tractor. motor; and to provide a device of this kind with a minimum amount of parts which is easy to install, simple in construction and operation, and inexpensive to manufacture and operate.

Illustrative embodiments of the invention are shownin the accompanying drawngs'in which:

Figure 1 is a perspective viewof my new lighting unit shown attached to the front end of a tractor.

Fig. 2 is a frontview of the same, with the radiator of the tractor and the generator pulley guard removed.

Fig. 3 is a cross sectional view taken on the line 3--3 of Fig. 2.

Fig. 4 is a cross sectional view of a modified form of the drive pulley.

Fig. 5 is a perspective view of another modified form of a drive pulley.

Fig. 6 is a cross sectional View taken on the line 6--6 of Fig. 5.

Figs. '7, 8 and 9 are other modified forms of drive pulleys.

Referring in detail to the preferred embodiment shown in Figs. 1, 2 and 3 of the drawings, my tractor lighting unit is arranged to be attached to the chassis frame I of a tractor adjacent the front end thereof so as to be in close proximity to the front end o-f the motor 2. A generator 3 of the usual automobile type is secured to the brackets 4 and 5. The upper end of the bracket 4 is pivotally secured to the end pil-fate Ii of the generator by any suitable means such as by bolt 'l or the like. The upper end of bracket 5 is secured to front end of the genera-tor by any suitable means such as by bolts l and l". The lower ends of the brackets 4 and 5 are each provided with a pair of spaced apertures 8 and 9 and each is positioned against the outer face of the chassis framev I in sp-aced relation to each other and in the manner shown in Fig. 1.

frame I by means of adjustable The brackets 4 and"5 are each secured to the chassis frame I by .any suitable means, such as by U-bolts I0 and Il and in the manner shown in Figs. 1 and 2.

YA driven pulley I2 is secured to the generator vshaft I3 at the forward end of the generator 3 yand a cap or guard I4 is placed thereover and is lanchored to the upper end of bracket 5 by any suitable means such as by machine screws I5 in the manner shown in Figs. 1 and 2.

A drive pulley I6 of special`design is mounted on the fan drive pulley I'I in the manner shown in Fig. 3.A T-he pulley I6. comprises a grooved annular rim I8, a wide-hanged member I9 arranged to lie against the outer face of the fan drive pulley, and a collar 20 having outwardly extending internally-threaded lugs 2|. The collar 2U is adapted to be t in the annular concentric recess 22 `of the fandrivepulley I'I and the drive pulley I6 Ysecured therein by means of machine screws 23. ,The Vfan drive pulley Il is secured to the crank shaft 2.4 in the-usual manner and is equipped with the usual fan belt I1. A pulley belt 25 is placed between the pulleys I2 'and I6.

An extension light of the usual type comprising a lamp 26 having a socket and bulb (not shown) and an electric cord 21 is also provided with this unit. One end of the cord 21 is attached to terminal posts 28 of the generator 3 and the otherend to the lamp socket. The lamp 26 may then be `attached by means of Iany suitable type of bracket to the front or rear or to both ends of the tractor.

In assembling and mounting the unit on the tractor chassis I the generator is rst loosely secured to the brackets 4 and 5 and the driven pulley I2 attached to the generator shaft I3. 'I'he brackets 4 and 5 :are then loosely mounted to the Ichassis frame. Next the drive pulley I6 is mounted on the fan drive pulley I1 and the pulley I2 aligned therewith, with the belt 25 in position therebetween, by shifting the brackets 4 and 5 along the frame I. The U-bolts III and II are then tightened. The generator is then shifted laterally to take up lany slack in` the pulley belt 25 and the screws 1, 'I' 'and 'l" tightened. Lateral adjustment of the generator can be effected at any time because the screws 'I and l act as pivots and the screw 'i" seated in the arcuate slot 29 in the upper end of bracket 5, as the locking medium after shifting the generator to the desired position. The guard or cap I4 is then placed over the pulley I2 and the device is ready for operation.

Cutouts, ammeters, batteries or switches are not employed in our lighting unit.

The modified construction of the drive pulley shown in Fig. 4 is practically the same as the pulley shown in Fig. 3 with the exception that the ange I9 is eliminated. In this construction the pulley is adapted for attachment to a different model but to the same type of farm tractor as is illustrated in Fig. 1. In this model of farm tractor the fan drive pulley has a smaller annular concentric recess 22, thereby providing for a bearing Surface against which the inner face of the grooved rim I8' may bear. 4 the diameter of the grooved rim I8 is substantially identical to that of the rim i8 of the device of Fig. 3.

In the modied construction shown in Figs. 5

. and 6 the drive pulley 30 is secured directly to a y wheel 3| of the motor 2 by means of set screws 32. The generator 33 is secured to some portion of the tractor such as the fender 34 by suitable brackets 35 and 35. The wires of the electric extension cord (not shown) are secured to the terminal posts 31.

In the modied construction of the drive pulley 38, shown in Fig. 7, this arrangement is adapted to be used on still another type of farm tractor wherein a nut 39 secures the crankshaft 4! to the fly wheel 4i. In this construction a steel plate 42 is substituted for the usual washer and is provided with 'internally-threaded apertures 43. The pulley 38 is also provided with apertures through which set screws 44 are inserted and then threaded into the internally-threaded apertures 43 of the plate 42 to secure the pulley to the crank shaft 4U.

In the modified form of pulley shown in Figs. 8 and S this arrangement is adapted to be used on still another type of farm tractor. This form of pulley is of the split type and is arranged to be placed directly back of the fan on the fan Yshaft and comprises two halves 45 and 46 held together by screws 41. It will be apparent that with this type vof pulley it is not necessary to remove the It is to be noted that fan, it being only necessary to split the pulley, place it on the fan shaft between the motor block and the fan, and then tighten the set screw 48.

A 32 volt, 150 watt lighting system is obtained by using the lighting unit of the present invention. This unit will furnish abundant light for all tractor operations under any and all conditions. The generator and lamp may be attached to substantially any partrof the tractor. A long extension cord may also be employed to use the lighted lamp a distance of substantially a hun- 'dred feet away from the tractor. This increases the uses of the unit and makes it adaptable for many jobs where six and twelve Volt lighting systems would be impractical due to line loss.

It is to be understood that some of the details Set forth may be altered or omitted without departing from the spirit of the invention as defined by the appended claims.

We claim:

l. A compound pulley device of the class described comprising a pair of pulleys, one being adapted for mounting on a shaft and having van overhanging belt llange and 'the other being hollow and having a flange to Jextend freely within said belt ange, and radially disposed bearing screws distributed about and carried by the second said flange to. bear outwardly against the first said iiange for coaxially aligning said pulleys.

2. In a device of the class described 'a cylindrically ilanged belt pulley having a belt supporting annular attachment adjustably movable in a plane parallel with the virtual plane of said pulley, said attachment 'comprising a cylindrical supporting part and a parallel belt receiving part, which Supporting part is adapted to t laterally and loosely within said pulley A'and also yhas a radial llange to bear Sidewi'se rigidly a'gai'n'st the ange of said pulley, and radial screw means to center said attachment and lock 'the same in place with the said flanges in bearing contact with each other.

RALPH L. TRAVIS. BROOKS A. 

